I0817 16:55:52.295126 10216 blender_python.cpp:194] Debug flags initialized to:
CPU flags:
  AVX2       : True
  AVX        : True
  SSE4.1     : True
  SSE3       : True
  SSE2       : True
  BVH layout : EMBREE
  Split      : False
CUDA flags:
  Adaptive Compile : False
OptiX flags:
  CUDA streams : 1
OpenCL flags:
  Device type    : ALL
  Debug          : False
  Memory limit   : 0
I0817 16:55:53.039842 10216 device_opencl.cpp:48] CLEW initialization succeeded.
I0817 16:55:53.630280 10216 device_cuda.cpp:56] CUEW initialization failed: Error opening the library
Switching to fully guarded memory allocator.
Blender 2.91.0 Alpha
Build: 2020-08-16 21:13:48 Windows Release
argv[0] = C:\Users\Lenovo\Desktop\blender\blender-2.91.0-5c78c16b1494-windows64\blender-2.91.0-5c78c16b1494-windows64\\blender
argv[1] = --debug
argv[2] = --debug-cycles
argv[3] = --python-expr
argv[4] = import bpy; bpy.ops.wm.sysinfo(filepath=r'C:\Users\Lenovo\AppData\Local\Temp\blender\debug_logs\blender_system_info.txt')
Read prefs: C:\Users\Lenovo\AppData\Roaming\Blender Foundation\Blender\2.91\config\userpref.blend
read file 
  Version 280 sub 39 date unknown hash unknown
found bundled python: C:\Users\Lenovo\Desktop\blender\blender-2.91.0-5c78c16b1494-windows64\blender-2.91.0-5c78c16b1494-windows64\2.91\python
Info: Deleted 1 object(s)

Error   : EXCEPTION_ACCESS_VIOLATION
Address : 0x00007FF8010E3D30
Module  : ig7icd64.dll
Thread  : 000027e8
Writing: C:\Users\Lenovo\AppData\Local\Temp\blender.crash.txt